Paper machine



May 31, 1932. i l. STVERN- ET AL 1,850,845

' PAPER MACHINE Filed Nov. 27, 1923 5 Sheets-Sheet 1 ATTORNEYS-I May 31, 1932.

I. STERN ET AL 3 Sheets-Sheet r\ 5 M T a \N W M IW Cw I ll: mwr wx W- K yw 5 B. I \NN. 1h! I n NM H R ATTORNEYS May 31, 1932. I. STERN ET AL PAPER MACHINE Filed Nov. 27, 1925 a Sheet-Sheet :s

INVENTOR 5 5/1/70 575/? V.N w 0 M A i Patented May 31, 1932 UNITED STATES PATENT OFFICE ISAAC STERN, OF NEW YORK, AND JACOB HUETHER, OF BROOKLYN, NEW YORK, AS-

SIGNORS TO S. 8: S. CORRUGATED PAPER MACHINERY CO.', INC., OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK PAPER MACHINE Application filed November 27, 1923. Serial No. 677,227.

Our invention relates to paper machinery and more particularly to machines for slotting, cutting and scoring blanks of pasteboard or the like in the production of folding boxes or cartons. A disadvantage which, up to the present, exists in the mechanical manu facture of paper box blanks resides in the difficulty of correctly registering the scoring lines with the slots whereby the box flaps are defined; as carried out with existing machines this is a time-consuming operation which requires highly skilled labor and even with such skill and even if great care is exercised, is very often unsuccessful so that paper box blanks, thus produced, are very often defective and not uniform. The object of the present invention is to provide a machine of simple construction whereby this disadvantage is automatically overcome and whereby paper box blanks are slotted and scored in a reliable and uniformly efficient manner without the necessity for highly skilled or careful supervision. Other more specific objects of the invention will appear from the description hereinafter.

In the accompanying drawings, which illustrate an example of the invention Without defining its limits, Figure 1 is a side elevation of the machine; Figure 2 is a sectional elevation thereof; Figure 3 is a detail sectional view of the slotting means; Figure tis a rear 7 elevation, Figure 5 is a detail View of the scoring means; and Figure 6 is a face View illustrating an example of a blank produced by the machine.

As shown in the drawings the machine comprises a suitable frame 10 upon which up rights 11 are mounted and provided with bearings 13 in which a shaft 14 is journalled; a similar shaft 15 is rotatably mounted in bearings 16 also carried by the standards 11 in superimposed relation to the bearings 13.

The shafts 14 and 15 carry the slotting mechanism which, in the present instance,

7 consists of a slotting disk 17 mounted upon the shaft 14 and provided with circumferential cutting means 18 and a co-operating slotting disk 17 provided with one or more circuinferential cutters 19 adapted to co-operate with the cutting means 18 as will appear more fully hereinafter; the slotting mochanism thus comprises a female cutting disk on the shaft 14 and a male cutting disk on the shaft 15. In the illustrated example, the cutting means 18 comprises a pair of annular cutters located in spaced parallel relation in a groove 18 which extends circumferentially of the disk 17; one of said cutters 18 is fixed in place by means of screws l8 while the other cutter 18 is preferably adjustable toward and away from its mate in the groove 18, as shown in Figure 3. For thispurpose screws 18 may be provided for bringing about the described adjustment of said other cutter, the latter being fixed in its adjusted position by means of screws 18 which, in such case, pass through slots 18' formed in the annular space between the cutters 18 of the disk 17 and so as to periodically enter said space'and in co-operation with the cutters 18, producing the desired slots. It will be understood that the adjustment of the cutters 18 in so far as the space therebetween is concerned, is such thatsaid cutters will properly'co-operate with the cutters 19 to produce shearing cuts in the material being slotted. For the purpose of adjusting the cutters .19 relatively to each other on the disk 17 the latter may be provided with an annular recess 19 in its one face, in which one of said cutters 19 is fixed by means of screws l9 which connect said one cutter with said disk as shown in Figure 3. The other cutter 19 is also located in said recess 19 but is secured to an adjustable plate 19 by means of screws 19 the plate 19 is coaxial and in surface engagement with the disk 17 and is rotatable upon the shaft '15 whereby the said other outter 19 is movable toward and away from that cutter 19 which is secured to the disk 17*. In this way the distance between the two cut- 19 are "located so as to be capable of move-,

ment in said groove. Thebolts 19 pass through-the plate 19 so as to partake of the adjustment thereof and are screwthreaded for the reception of nuts 19 whereby said bolts are clamped in place and the plate 19, accordingly fixed in the adjusted position; in

I I this way the adjustable cutter 19 is maintained in the desired spaced relation to the other cutter 19. In order to maintain that part of the groove 18 which isbounded' by,

the cutters 18 in acondition of maximum efficiency, the machine may further include members 21 adj ustably mounted by means of a bolt and slot 22 upon a block 23 which itself is slidably carried by a bar 24 extending between opposite side members of the frame 10 as shown in Figure 4; the member 21 extends into the groove 18 between the cutters 18 and is stationary with respect to the disk 17 and, as the latter is rotated in the operation of the mechanism, forces from, the space between said cutters 18 any of the cut sections of the pasteboard blank which may remain therein subsequent to the slotting operation. to be more fully set forth hereinafter. In the preferred arrangement the shafts 14 and 15 carry a plurality of slotting disks 1 7 and 17 respectively, the number of such disks corresponding with and depending upon the number of slots which it is desired to produce in thepasteboard blank; the physical characteristics of the latter are dependent upon the type and form of box being manufactured. It will be understood that a cleaning member 21 is provided for each slotting disk 17, all of said members 21 being mounted upon the bar 24 through the medium of blocks 23 in proper relation toithe slotting disks 17 as illustrated in Figure 4. As shown in said Figure 4 of the drawings the machine further 1n cludes rotary cutters 25;,and 26 located in cooperating pairs upon theshafts 14 and 15 respectively and arranged to trim the edges of the pasteboard blank. In order that the relative positions of the slotting disks 17 and 17 a as well as the rotary cutters 25 and 26, may be varied to meet the requirements of the blanks being produced, said slotting disks and cutters are mounted upon the shafts 14 and 15 so as to be adjustable lengthwise thereof. In the'preferred construction the arran ement is such that thej'slotting disks 17 an 17 a and the cutters 25 and 26 are independently adjustable in pairs; in the illustrated example this is accomplished by providing the shaft 14 .with a toothed rack 27 ex-' tending lengthwise thereof and meshing with pinions 28 rotatably mounted upon each slotting disk 17 and each rotary cutter 25 as shown in Figures 2, 3'and 4. Each pinion 28 is fixed upon a short shaft having a squared end 29 as shown in Figure 2 for the accommodation of a key or other implement whereby said pinions may be rotatably actuated. As illustrated in Figures 2 and 4, the slotting disks 17 a and the cutters 26 are slidably fixed upon the shaft 15 by means of keys 30 in a keyway said shaft 15. With the described arrangement as any one of the pinions 28 is rotatably actuated it will be caused to travel along the rack 27, carrying with it a disk 17 or a cutter 25 as the case may be; as the disk 17 is thus shifted it will carry with itthe co-operating disk'17 it being understood that the latter has been shifted to bring one of the cutting members 19 into the groove 18 so as to couple the disks 17 and 17 together. In the case of the cutter 25, an adjustment in one direction will carry with it the co-operating cutter 26 as will be apparent from an inspection of Figure 4; an adjustment of the latter to again bring them into co-operative relation with the cutters 25. The slotting disks 17 and 17* may be secured in their adjusted positions in any convenient manner, as, for instance, by means of set screws 32 which, instead of bearing directly upon the shafts 14 and 15, may bear against tongues 32 comprising integral portions of annular members 33, mounted upon the shafts 14 and 15, respectively; the

tongues 32 areformed by cutting the annular members 33 in the manner shown in Figure 2 1 and are pressed into surface engagement with the shafts 14 and 15 by the action of the screws 32 and thus serve to maintain the slotting disk 17 and 17 in an adjusted position without mutilating the shafts 14 or 15. The

rotary cutters 25 and 26 may likewise be fixed 31 extending lengthwise of in adjusted positions in any convenient manner as by means of set'screws 34. It will, of course, be understood that when the slotting disks 17 and 17 are adjusted lengthwise of the shafts 14 and 15 in the manner previously described, the members 21 will in each 'case wheels 35 rotatably' carried by brackets 36 which are mounted in such a manner as to occupy a fixed relation to the cutting disks 17 without interfering with the rotation thereof and without itself partaking of the rotative movements of id disks 17 Thus, as shown in Figure 3, each disk 17 may be follow-such adjustment. because of the fact The scoring mechanism comprises scoring provided with a hub 36 upon which one end of the bracket 36 is loosely supported, any suitable means being provided for maintaining said end of the bracket 36 upon said hub 36*. For instance as shown, a plate 36 secured to the end face of the hub 36 by screws 36 may be provided for this purpose. In the preferred arrangement the disks 17 are dished for the accommodation of the end of said bracket, and the latter is recessed to receive the plate 36 as shown in Figure 3. In the preferred arrangement the parts are so proportioned and arranged with respect to each other that the scoring wheel extends into that part of the groove 18 of the slotting disk which is between the cutters 18 as shown in Figure 5; it will be understood however that this is not arbitrarily necessary and that the scoring wheel 35 need not extend into the groove 18 but may be held in proper registry with the slotting means by the bracket 36 upon which it is mounted. To increase the rigidity of construction, the bracket 36 may be provided with a depending arm 37 which straddles a bar 38 mounted upon the frame 10 and is provided with a set screw 39 adapted to bear against said bar 38 for fixing the parts against unintentional shifting. By reason of the fact that the periphery of the scoring wheel 35 projects into the groove l8 but mainly because said wheel is mounted upon a bracket movable as a unit with and in co-operative relation to the slotting disk 17 the operative relation between the latter and the scoring wheel is always maintained.

Because of this fixed relation between the slotting means and the scoring means, the desired alignment between the slots produced by the slotting means and the scoring lines produced by the scoring means is automatically mjaintained at all times. A feed roll 40 is carried by a shaft 41 mounted in suitable hearings carried by the uprights 12; the feed roll 40 is located in superimposed relation to the scoring wheel 35 j and comprises a means whereby the blank is pressed upon the scoring wheel as shown in Fig. 2. The feed roll 40 may, of course, be replaced by a co-operating scoring wheel mounted and arranged with respect to the disks 17 a in the same way as the scoring wheels 35 are mounted and arranged relatively to the disks 17 or to any other device.

Any suitable type of driving means may be provided for operating the mechanism so far as described, such mechanism as shown in the drawings comprising, for instance, a driving shaft 42 driven by a pulley 43 and belt 44, a suitable clutch arrangement 45 being provided, if desired, for selectively connecting and disconnecting said pully 43 from the shaft 42. The latter transmits its motion by means of a pinion 46 to a gear 47 mounted upon the shaft 14, the gear 47 in turn meshing with a corresponding gear 48 on the shaft 15 and thereby bringing about a corresponding rotation of the latter. The

gear 48,'as shown in Fig. 1 may mesh with i a pinion 49 located upon a stub shaft 50 and meshing with a gear 51 carried by the shaft 41 upon which the roll 40 is mounted. A suitable feeding mechanism in the form of an endless chain or belt 52 travelling over sprocket wheels 53 may comprise a part of the mechanism, said chain being provided at intervals with projections 54 adapted to engage and advance the blank in the manner to be more fully set forth hereinafter. This feeding mechanism may be actuated by means of a sprocket chain 55 connected with a sprocket pinion 56 mounted on the stub shaft shaft 50 and a sprocket pinion 57 mounted upon the shaft 58 which carries one of the sprockets 53.

As previously stated herein the cutting members 19 are preferably adjustable relatively to each other upon the disk 17 upon which they are located. In some cases it may be desirable, instead of individually adjusting said cutting members, to eo-ineidentally adjust all of them without requiring an individual manipulation thereof. For this purposethe gear 48 may be loosely mounted upon the shaft 15 and provided upon one face with a pinion 59 which meshes with a gear 60 fixed upon the shaft 15 in surface engagement with the gear 48 as shown in Fig. 4. This gear 60 is provided with segmental slots 61 for the accommodation of bolts 62 whereby the gears 48 and 60 are secured together. To

facilitate the adjustment of the parts in the manner about to be described, the pinion 59 may be provided upon its exposed face with spaced recesses 63 for the accommodation of a spanner wrench or the like. It will be seen that if the bolts 62 are loosened and the pinion 59 is rotated in one direction or the adjustment, the gear 60 may be provided with a pointer 64 arranged to co-operate with a scale 65 produced on one face of the gear 48 and consisting of suitable graduations to indicate in any predetermined unit of measurement the extent of adjustment which may be effected by the hereinbefore described actuation of the pinion 59.

In practice a blank a of cardboard or other suitable nnaterial is carried along by the feeding chain 52 and advanced by a .projeci duced in accurate alignment and registry tion 54 thereof in a predetermined manner until said cardboard or other material finally passes between the scoring wheel 35 and the roll 'or equivalent device, The latter being positively driven feeds the blank a along and over the scoring Wheel 35 which is an idler. In its passage between the roll 40 and the scoring wheel 35, a score-line or aplurality of score-lines b are jproduced thereon, this depending upon the size of the blank and the number. of scoring wheels 35 included in the machine. As the advance of the blank a is continued it will finally pass between'the slotting disks 17 and 17a, its forward ed e passing between said disks before the blank is entirely free of the scoring members 35Cand 40. The blank, through the medium of the cutting members 19 and cutters ,18 will be slotted as indicated at c in Fig. 6. The length of the slots 0 will depend upon the position of the cutting members 19 relatively'to each other and to the feeding projections 54 and, as previously stated, may be predetermined by properly adjusting said members 19 either relatively to each other or collectively, as set forth. In any case, because of thefact that the scoring wheels 35 occupy a fixed relation to the cutting means, the slots 0 and the score-lines b will be automatically and uniformly prowith each other as shown in Fig. 6. This result isobtained without requiring any special supervision on the part of the operator or the necessity for any particularly skilled attention on his part. It will be obvious that the machine may be constructed in a variety of forms to provide for the production of any predeterminedtype of blanks of any size and form with any desired grouping of slots and score-lines.

Various changes in the specific formshown and described may be made within' the scope of the claims without departing from the na'- 7 ture of our invention. 7

We claim:

'1. In a paper machine, the combination-of a pair of shafts, co-operating slotting disks mounted on said shafts, a bracket in fixed relation to the slotting disk carried by one ofv said shafts and a scoring wheel rotatably mounted on said bracket and maintained thereby in predetermined fixed relation to slotting disks. r

In a paper machine, the combination of a pair of shafts, co-operating slotting disks mounted on said shafts, oneof said disks having an annular cutting groove, a bracket in fixed relation to the slotting disk carried by one of said shafts-and a scoring wheel'rotatably mounted on said bracket and extending into said roove whereby said slotting disks and scorlng wheel are maintained in predetermined fixed relation to each other. 3. In a paper machine, the combination of mounted on saidshafts, a flanged hub on one of said disks, a bracket connected with said hub to have a fixed relation to its disk without interfering with the rotative motion of said disk, an arm connected with said bracket, a fixed rail slidably engaged by said arm and a scoring wheel rotatably mounted upon said bracket and maintained thereby in predetermined relation to said slotting disks.

4. In a paper machine, the combination of a pair of shafts, co-operating slotting disks mounted on said shafts, one of said disks having an annular cutting groove, and a flanged hub, a bracket connected with said Hub to have a fixed relation to its disk without interfering with the rotative motion of said disk, an arm depending from said bracket, a fixed rail slidably engaged by said arm roll journalled on said frame and a scoring wheel rotatably mounted upon said bracket in operative relation to said feed roll, said scoring wheel extending into said groove whereby saidslotting dlsks and scoring whee] are maintained in predetermined fixed relation to each other. I v

6. A paper machine comprising a frame, a pair of superimposed shafts journalled thereon, slotting disks mounted on said shafts, a hub on one of said disks, a bracket connected with said hub to have a fixed relation tosaid one disk without interfering with its rotative movements, a feed roll journalled on said frame and a scoring wheel ro tatably mounted upon said bracketin operative relation to said feed roll, said bracket maintaining said slotting disks and'scoring WlfiQGl in predetermined fixed relation to each ot er.. 7. A paper machine comprising a frame, a pair of superimposed shafts jour'nalled thereon, a plurality of co-operating female slotting disksonthe lower shaft, each of said female disks having a'circumferential groove, a pluralit of male cutting disks on on the upper sha t each having cutting-devices co-operating with said grooves to slot a blank, brackets in fixed relation to said female disks, scoring wheels rotatably mounted on said bracket and extending into the grooves of said femai disks'wh'ereby the latter and said scoring wheels are maintained in fixed relation to each other, a feed roll common to all of said scoring wheels and journalled on said frame and means for operating said disks and feed roll.

8. In a paper machine, the combination of a pair of shafts, a plurality of co-operating slotting disks carried tlie1'e y.-individual adjusting devices carried by the disks on one shaft, and means located on said lastnamed shaft and co-operating with all of said individual devices for adjusting said slotting disks in co-operating pairs lengthwise of said shafts. v

9. In a paper machine, the combination of a pair of shafts, a plurality of co-operating slotting disks carried thereby, individual pinions carried by the disks of one shaft and a rack extending lengthwise of said lastnamed shaft and co-operating with all of said pinions for adjusting said slotting disks in co-operating pairs lengthwise of said shafts.

10. In a paper machine, the combination of a pair of shafts, a plurality of slotting disks carried by one of said shafts, a plurality of co-operating slotting'disks carried by the other ofsaid shafts, scoring wheels journalled' in fixed relation to said slotting disks and in operative registry therewith, individual adjusting devices on each of the disks on one of said shafts and means on said shaft common to all of said devices for adjusting said slottingdisks and scoring wheels in co-operating units lengthwise of said shafts. v

11. In a paper machine, the combination of a pair of shafts, a plurality of slotting disks carried by one of said shafts, a plurality of co-operating slotting disks carried by the other of said shafts and each having a circumferential groove, scoring wheels journalled in fixed relation to said female slotting disks and in registry with the grooves thereof, individual adjusting devices on each of said female disks and means on the shaft carrying the latter disks common to all of said devices for adjusting said slotting disks and scoring wheels in co-operating units lengthwise of -said shafts. 4

12. In a paper machine, the combination of a pair of shafts, a plurality of slotting disks carried by one of said shafts, a plurality of co-operating slotting disks carried by the other of said shafts, scoring wheels journalled in fixed relation to said slotting disks and in operative registry therewith, individ ual pinions on each of said disks on one of said shafts and a rack extending lengthwise of said shaft common to all of said pinions and co-operating therewith to adjust said slotting disks and scoring wheels in co-operating units lengthwise of said shafts.

13. In a paper machine, the combination of a pair of shafts, a plurality of male slotting disks carried b one of said shafts, a plurality of co-operating female slotting disks carried by the other of said shafts and each hav-.

14, In a paper machine, the combination of a pair of shafts, a female slotting disk on one of said shafts, annular cutting members on said female slotting disk spaced apart to form a circumferential groove, one of said cutting members being adjustable toward and away from the other, a co-operating male slotting disk on the other shaft provided with an annular recess, cutters located in circumf'er entially spaced relation in said annular recess for co-operation with the cutting members of the female slotting disk, means whereby the circumferential distance between said cutters may be adjusted and a scoring wheel mounted in fixed operative relation to said cutting members and cutters.

15. In a paper machine, the combination of a pair of shafts, a plurality of female slot-- ting disks on'one of said shafts, each of said slotting disks having a circumferential cutting groove, a plurality of male slotting disks on the other shaft, cutting members on said male slotting disks adapted to co-operate with cutting grooves of said female disks to slot a blank, meansfor feeding said blank, gearing connected with said shafts and including a gear loosely mounted upon said other shaft, a slotted gear fixed upon said other shaft in surface engagement with said firstnamed gear and adjustably connected there with, and a pinion mounted on said firstnamed gear and meshing with the gear fixed upon said other shaft and adapted to actuate the same whereby said cutting members are rotatably adjusted as a unit relatively to said feeding means.

16. In a paper machine, the combination of a pair of shafts, a plurality of female slotting disks on one of said shafts, each of said slotting disks having a circumferential cutting groove, a plurality of male slotting disks on the other shaft, cutting members on said male slotting disks adapted to co-operate with the cutting grooves of said female disks to slot a blank, means for feeding said blank,

first-named gear, and adjustably connected therewith, a pinion mounted on said firstnamed gear and meshing with the gear fixed upon said other shaft and adapted to actuate the same whereby said cutting members are rotatably adjusted as a unit relatively to said feeding means, a plurality of-scorin'g wheels mounted adjacent to said female slotting disks and extending into the cutting grooves thereof whereby said slotting disks and scoring wheels are maintained in predetermined fixed relation to each other, a pressure roll common to all of said scoring wheels and rotary cutters mounted upon said shafts in co-operating pairs for trimming the edges of the blank.

17. In combination, slotting mechanism including a pair of slotting heads, one hav ing a peripheral groove and the other having a blade adapted to enter said groove to form a slot in a sheet passing between said heads, a stripper finger extending into said groove, and an adjusting member for adjusting said slotting heads and stripper finger simultaneously axially of the former.

In testimony whereof we have hereunto set our hands.

ISAAC STERN.

JACOB HUETHER. 

